fs/proc/array.c: change do_task_stat() to use while_each_thread()

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / proc / array.c

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 1bd2077..656e401 100644 (file)
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -140,24 +140,15 @@ static const char * const task_state_array[] = {
        "t (tracing stop)",     /*   8 */
        "Z (zombie)",           /*  16 */
        "X (dead)",             /*  32 */
-       "x (dead)",             /*  64 */
-       "K (wakekill)",         /* 128 */
-       "W (waking)",           /* 256 */
-       "P (parked)",           /* 512 */
 };
 
 static inline const char *get_task_state(struct task_struct *tsk)
 {
-       unsigned int state = (tsk->state & TASK_REPORT) | tsk->exit_state;
-       const char * const *p = &task_state_array[0];
+       unsigned int state = (tsk->state | tsk->exit_state) & TASK_REPORT;
 
-       BUILD_BUG_ON(1 + ilog2(TASK_STATE_MAX) != ARRAY_SIZE(task_state_array));
+       BUILD_BUG_ON(1 + ilog2(TASK_REPORT) != ARRAY_SIZE(task_state_array)-1);
 
-       while (state) {
-               p++;
-               state >>= 1;
-       }
-       return *p;
+       return task_state_array[fls(state)];
 }
 
 static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
@@ -453,8 +444,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
                                min_flt += t->min_flt;
                                maj_flt += t->maj_flt;
                                gtime += task_gtime(t);
-                               t = next_thread(t);
-                       } while (t != task);
+                       } while_each_thread(task, t);
 
                        min_flt += sig->min_flt;
                        maj_flt += sig->maj_flt;